Paint spray gun



FIG. 1 is front perspective view of a paint spray gun illustrating ournew design;

FIG. 2 a left side view thereof;

FIG. 3 is right side view thereof;

FIG. 4 is a rear side view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is an enlarged top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The ornamental design for a paint spray gun, as shown and described.